fix: account for spigot having private PalettedContainer#get(int) (#2910)

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightGetBlocks_Copy.java

@@ -15,6 +15,7 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
@@ -179,8 +180,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
+            if (PaperLib.isPaper()) {
                 for (int i = 0; i < 64; i++) {
-                biomes[layer][i] = palettedContainer.get(i);
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(

worldedit-bukkit/adapters/adapter-1_20_2/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R2/PaperweightPlatformAdapter.java

@@ -123,6 +123,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Field LEVEL_CHUNK_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -212,6 +214,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
             } catch (NoSuchFieldException ignored) {
             }
             POST_CHUNK_REWRITE = chunkRewrite;
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightGetBlocks_Copy.java

@@ -15,6 +15,7 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
 import net.minecraft.server.level.ServerLevel;
 import net.minecraft.world.entity.Entity;
@@ -179,8 +180,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
+            if (PaperLib.isPaper()) {
                 for (int i = 0; i < 64; i++) {
-                biomes[layer][i] = palettedContainer.get(i);
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(

worldedit-bukkit/adapters/adapter-1_20_4/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R3/PaperweightPlatformAdapter.java

@@ -123,6 +123,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Field LEVEL_CHUNK_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -212,6 +214,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
             } catch (NoSuchFieldException ignored) {
             }
             POST_CHUNK_REWRITE = chunkRewrite;
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightGetBlocks_Copy.java

@@ -15,6 +15,7 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
 import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.server.level.ServerLevel;
@@ -180,8 +181,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
+            if (PaperLib.isPaper()) {
                 for (int i = 0; i < 64; i++) {
-                biomes[layer][i] = palettedContainer.get(i);
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(

worldedit-bukkit/adapters/adapter-1_20_5/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_20_R4/PaperweightPlatformAdapter.java

@@ -121,6 +121,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Field LEVEL_CHUNK_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -210,6 +212,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
             } catch (NoSuchFieldException ignored) {
             }
             POST_CHUNK_REWRITE = chunkRewrite;
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightGetBlocks_Copy.java

@@ -15,6 +15,7 @@ import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BaseBlock;
 import com.sk89q.worldedit.world.block.BlockState;
 import com.sk89q.worldedit.world.block.BlockTypesCache;
+import io.papermc.lib.PaperLib;
 import net.minecraft.core.Holder;
 import net.minecraft.server.dedicated.DedicatedServer;
 import net.minecraft.server.level.ServerLevel;
@@ -180,8 +181,18 @@ public class PaperweightGetBlocks_Copy implements IChunkGet {
             biomes[layer] = new Holder[64];
         }
         if (biomeData instanceof PalettedContainer<Holder<Biome>> palettedContainer) {
+            if (PaperLib.isPaper()) {
                 for (int i = 0; i < 64; i++) {
-                biomes[layer][i] = palettedContainer.get(i);
+                    biomes[layer][i] = palettedContainer.get(i); // Only public on paper
+                }
+            } else {
+                try {
+                    for (int i = 0; i < 64; i++) {
+                        biomes[layer][i] = (Holder<Biome>) PaperweightPlatformAdapter.PALETTED_CONTAINER_GET.invoke(i);
+                    }
+                } catch (Throwable e) {
+                    throw new RuntimeException(e);
+                }
             }
         } else {
             LOGGER.error(

worldedit-bukkit/adapters/adapter-1_21/src/main/java/com/sk89q/worldedit/bukkit/adapter/impl/fawe/v1_21_R1/PaperweightPlatformAdapter.java

@@ -119,6 +119,8 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
     private static Method PAPER_CHUNK_GEN_ALL_ENTITIES;
     private static Field SERVER_LEVEL_ENTITY_MANAGER;
 
+    static final MethodHandle PALETTED_CONTAINER_GET;
+
     static {
         final MethodHandles.Lookup lookup = MethodHandles.lookup();
         try {
@@ -195,6 +197,13 @@ public final class PaperweightPlatformAdapter extends NMSAdapter {
                 SERVER_LEVEL_ENTITY_MANAGER = ServerLevel.class.getDeclaredField(Refraction.pickName("entityManager", "N"));
                 SERVER_LEVEL_ENTITY_MANAGER.setAccessible(true);
             }
+
+            Method palettedContaienrGet = PalettedContainer.class.getDeclaredMethod(
+                    Refraction.pickName("get", "a"),
+                    int.class
+            );
+            palettedContaienrGet.setAccessible(true);
+            PALETTED_CONTAINER_GET = lookup.unreflect(palettedContaienrGet);
         } catch (RuntimeException | Error e) {
             throw e;
         } catch (Exception e) {